"Is an Ultimatum the Last Word on Crisis Bargaining?": Replication Archive
==========================================================================

Paper by Mark Fey and Brenton Kenkel (forthcoming, Journal of Politics).

Corresponding author for replication materials: Brenton Kenkel
(brenton.kenkel@gmail.com).

This replication archive consists of the following files:

-   ICB\_actor\_data.txt: International Crisis Behavior (v10.0)
    actor-level data in tab-separated format.
-   ICB\_system\_data.txt: International Crisis Behavior (v10.0)
    system-level data in tab-separated format.
-   README: this file.
-   replicate-ultimata.r: R script to replicate all empirical analysis,
    including creation of all tables in the manuscript and appendix.
-   ultimata-crises-final.csv: Dataset on ICB crises in which an
    ultimatum was issued (coded and created by authors).

The empirical analysis was performed in R 3.5.3. The following R
packages, all of which can be installed via CRAN, are required (versions
we used listed in parentheses):

-   broom (0.5.1)
-   dplyr (0.7.8)
-   dummies (1.5.6)
-   foreach (1.4.4)
-   plyr (1.8.4)
-   reshape2 (1.4.3)
-   stringr (1.4.0)
-   xtable (1.8.3)

